Ubuntu怎样安装Python3.6

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Ubuntu默认安装了Python2.7和3.5
输入命令python

按Ctrl+D退出python命令行

输入命令sudo add-apt-repository ppa:jonathonf/python-3.6

按Enter确认
输入命令sudo apt-get update
输入命令sudo apt-get install python3.6
按Y确认

调整Python3的优先级，使得3.6优先级较高
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.5 1
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 2
更改默认值，python默认为Python2，现在修改为Python3
sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150

此时再输入命令python

可以看到此时已经是Python3.6了

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it is very useful

study it and use it